实验三
2019-04-21 17:37 Chirly 阅读(117) 评论(0) 编辑 收藏 举报Part 2
#include <iostream> #include "graph.h" using namespace std; int main() { Graph graph1('*',5); graph1.draw(); system("pause"); system("cls"); Graph graph2('$',7); graph2.draw(); system("pause"); return 0; }
#include "graph.h" #include <iostream> using namespace std; // 带参数的构造函数的实现 Graph::Graph(char ch, int n): symbol(ch), size(n) { } // 成员函数draw()的实现 // 功能:绘制size行,显示字符为symbol的指定图形样式 void Graph::draw() { int i, j, k; for(i=1;i<=size;i++) { for (j = 1; j <= size - i; j++) cout << " "; for (k = 1; k <= 2 * i - 1; k++) cout << symbol; cout << endl; } }
#ifndef GRAPH_H #define GRAPH_H // 类Graph的声明 class Graph { public: Graph(char ch, int n); // 带有参数的构造函数 void draw(); // 绘制图形 private: char symbol; int size; }; #endif
运行结果:
Part 3
#include<iostream> #include"Fraction.h" using namespace std; int main(){ fraction a; a.show(); fraction b(3,4); b.show(); fraction c(5); c.show(); fraction d; d.add(b,c); d.min(b,c); d.mul(b,c); d.div(b,c); d.com(b,c); }
#include "fraction.h" #include<iostream> using namespace std; void fraction::add(fraction a , fraction b){ fraction c; c.top=a.top*b.bottom+b.top*a.bottom; c.bottom=a.bottom*b.bottom; cout<<"两数相加:"<<c.top<<"/"<<c.bottom<<endl; } void fraction::min(fraction a , fraction b){ fraction c; c.top=a.top*b.bottom-b.top*a.bottom; c.bottom=a.bottom*b.bottom; cout<<"两数相减:"<<c.top<<"/"<<c.bottom<<endl; } void fraction::mul(fraction a , fraction b){ fraction c; c.top=a.top*b.top; c.bottom=a.bottom*b.bottom; cout<<"两数相乘:"<<c.top<<"/"<<c.bottom<<endl; } void fraction::div(fraction a , fraction b){ fraction c; c.top=a.top*b.bottom; c.bottom=a.bottom*b.top; cout<<"两数相除:"<<c.top<<"/"<<c.bottom<<endl; } void fraction::com(fraction a , fraction b){ int c; c=a.top*b.bottom-b.top*a.bottom; if (c<0) cout<<"两数相较:"<<a.top<<"/"<<a.bottom<<"<"<<b.top<<"/"<<b.bottom<<endl; else if (c>0) cout<<"两数相较:"<<a.top<<"/"<<a.bottom<<">"<<b.top<<"/"<<b.bottom<<endl; else cout<<"两数相较:"<<a.top<<"/"<<a.bottom<<"="<<b.top<<"/"<<b.bottom<<endl; } void fraction::show(){ cout<<top<<"/"<<bottom<<endl; }
#ifndef FRACTION_H #define FRACTION_H class fraction{ public: fraction(int top0 = 0 , int bottom0 = 1):top(top0),bottom(bottom0){} void add(fraction a,fraction b); void min(fraction a,fraction b); void mul(fraction a,fraction b); void div(fraction a,fraction b); void com(fraction a,fraction b); void show(); private: int top; int bottom; }; #endif
运行结果: